It is a composite material formed by reinforcing fiber materials, such as glass fiber, carbon fiber, arylon fiber, etc., and the matrix material through winding, molding or pultrusion molding process. According to the different reinforcement materials, the common fiber reinforced composites are divided into glass fiber reinforced composites (GFRP), carbon fiber reinforced composites (CFRP) and aramid fiber reinforced composites (AFRP). High specific strength, large specific modulus; The material properties have designability; Good corrosion resistance and durability; The coefficient of thermal expansion is close to that of coagulant.